This study focuses on clay smear processes
during fault gouge evolution in
sand-clay sequences at depths up to
2 km. A clay-rich fault gouge can dramatically
lower the fault’s permeability,
and prediction of this process ...

The question, whether crustal domains
are allochthonous terranes or not is
crucial for plate tectonic models of
the Ibero-Armorican segment of the
Variscan belt. The Léon Domain in
the Armorican Massif appears as a ...

The anisotropy of magnetic susceptibility
(AMS) of rocks reflects the preferred
orientations of minerals. Therefore
AMS is a quick and easy way to
characterize rock fabrics (Hrouda 1982,Borradaile 1988); the obtained result ...

The radiogeic 4He isotope is continuously
forming in the lithosphere mainly
by the alpha-decay of U, Th and Sm.
This decay process was discovered already
at the beginning of the 20th century,
and the first U/He dating ...